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  1. MariaDB Server
  2. MDEV-20956

binlog_encryption.rpl_mixed_binlog_max_cache_size failed in buildbot: incorrect checksum for freed object

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      http://buildbot.askmonty.org/buildbot/builders/mac-1012-bintar/builds/5972

      10.4 e2f570bff872532dcae5f2cf882e01f4

      binlog_encryption.rpl_mixed_binlog_max_cache_size 'mix' [ fail ]
              Test ended at 2019-09-10 09:37:38
       
      CURRENT_TEST: binlog_encryption.rpl_mixed_binlog_max_cache_size
      mysqltest: In included file "./include/rpl_connect.inc": 
      included from ./include/master-slave.inc at line 46:
      included from /Users/buildbot/maria-slave/mac-1012-bintar/build/mysql-test/suite/binlog_encryption/rpl_mixed_binlog_max_cache_size.test at line 2:
      At line 55: query 'connect  $rpl_connection_name,127.0.0.1,root,,test,$_rpl_port,' failed: 2013: Lost connection to MySQL server at 'handshake: reading inital communication packet', system error: 60
       
      The result from queries just before the failure was:
      include/master-slave.inc
      

      2019-09-10  9:35:38 13 [Note] Start binlog_dump to slave_server(2), pos(master-bin.000001, 4)
      mysqld(87086,0x70000679b000) malloc: *** error for object 0x7fddf6d31c00: incorrect checksum for freed object - object was probably modified after being freed.
      *** set a breakpoint in malloc_error_break to debug
      190910  9:35:38 [ERROR] mysqld got signal 6 ;
      This could be because you hit a bug. It is also possible that this binary
      or one of the libraries it was linked against is corrupt, improperly built,
      or misconfigured. This error can also be caused by malfunctioning hardware.
       
      To report this bug, see https://mariadb.com/kb/en/reporting-bugs
       
      We will try our best to scrape up some info that will hopefully help
      diagnose the problem, but since we have already crashed, 
      something is definitely wrong and this may fail.
       
      Server version: 10.4.8-MariaDB-log
      key_buffer_size=1048576
      read_buffer_size=131072
      max_used_connections=6
      max_threads=153
      thread_count=13
      It is possible that mysqld could use up to 
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 63511 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0x7fddf7139a08
      Attempting backtrace. You can use the following information to find out
      where mysqld died. If you see no messages after this, something went
      terribly wrong...
      stack_bottom = 0x0 thread_stack 0x49000
      

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            Elkin Andrei Elkin
            elenst Elena Stepanova
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